Hardi ES 50 Operator's Manual page 22

7.1 Cleaning The Sprayer (cont.)
Be familiar with local legislation regarding disposal of agricultural
chemicals, mandatory decontamination methods, etc. Contact the
appropriate office, e.g. Department of Agriculture.
Cleaning starts with calibration as a well calibrated sprayer will ensure
the minimal amount of remaining spray liquid. It is a good practice to
clean the sprayer immediately after use thereby rendering the sprayer
safe and ready for the next application. This also prolongs the life of
the components.
It is sometimes necessary to leave the spray liquid in the tank for short
periods of time (e.g. overnight), or until the weather becomes suitable
for spraying again. Unauthorized persons and animals must not have
access to the sprayer under these circumstances.
Cleaning
1. Dilute the remaining spray liquid in the tank with at least 10 parts
water and spray the liquid out into the field or lawn you have just
sprayed.
2. Select and use the appropriate protective clothing. Select detergent
suitable for cleaning and suitable deactivation agents if necessary.
3. Rinse and clean sprayer and tractor externally. Use detergent if
necessary.
4. Remove all filters and clean them. Be careful not to damage the
mesh. Replace filters when the sprayer is completely clean.
5. With the pump running, rinse the inside of the tank. Remember the
tank roof. Rinse and operate all components and any equipment that
has been in contact with the chemical.
6. After spraying the liquid out again in the field or lawn, stop the pump
and fill at least 1/5 of the tank with clean water. Note that some
chemicals require the tank to be completely filled. Add appropriate
detergent and/or deactivating agent, e.g. Washing soda or Triple
ammonia.
NOTE: If a cleaning procedure is given on the chemical label, follow it
closely.
7. Start the pump and operate all controls enabling the liquid to come
in contact with all the components. Leave the distribution valves until
last. Some detergents and deactivating agents work best if left in the
tank for a short period. Check the label.
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HARDI GAS ENGINE ESTATE SPRAYER OPERATOR'S MANUAL